Phospho S300 PDH E1 alpha protein (PDHA1) Profiling ELISA Kit (ab115345)


  • Product namePhospho S300 PDH E1 alpha protein (PDHA1) Profiling ELISA Kit
    See all Pyruvate Dehydrogenase E1-alpha subunit kits
  • Detection methodColorimetric
  • Precision
    Sample n Mean SD CV%
    1 8 2.5%
    Sample n Mean SD CV%
    1 4 7.8%
  • Sample type
    Cell culture extracts, Tissue Extracts
  • Assay typeSandwich (quantitative)
  • Sensitivity
    15 µg/ml
  • Range
    15 µg/ml - 500 µg/ml
  • Assay durationMultiple steps standard assay
  • Species reactivity
    Reacts with: Mouse, Rat, Cow, Human
  • Product overview

    ab115345 is an in vitro enzyme-linked immunosorbent assay to determine the levels of phospho S300 PDHA1 protein in cell and tissue lysates. The assay employs a mouse antibody specific for PDHA1 protein coated on a 96-well plate. Samples are pipetted into the wells and PDHA1 protein present in the sample is bound to the wells by the immobilized antibody. The wells are washed and a rabbit anti-phospho S300 PDHA1 protein detector antibody is added. After washing away unbound detector antibody, HRP-conjugated anti-rabbit antibody is pipetted into the wells. The wells are again washed, an HRP substrate solution (TMB) is added to the wells and color develops in proportion to the amount of phospho S300 PDHA1 protein bound. The developing blue color is measured at 600 nm. Optionally the reaction can be stopped by adding hydrochloric acid which changes the color from blue to yellow and the intensity can be measured at 450 nm.

  • Notes

    Store all components at 4°C. This kit is stable for 6 months from

    receipt. Unused microplate strips should be returned to the pouch

    containing the desiccant and resealed.

  • Tested applicationsSuitable for: ELISAmore details
  • PlatformMicroplate


  • FunctionThe pyruvate dehydrogenase complex catalyzes the overall conversion of pyruvate to acetyl-CoA and CO(2). It contains multiple copies of three enzymatic components: pyruvate dehydrogenase (E1), dihydrolipoamide acetyltransferase (E2) and lipoamide dehydrogenase (E3).
  • Tissue specificityUbiquitous.
  • Involvement in diseaseDefects in PDHA1 are a cause of pyruvate dehydrogenase E1-alpha deficiency (PDHAD) [MIM:312170]. An enzymatic defect causing primary lactic acidosis in children. It is associated with a broad clinical spectrum ranging from fatal lactic acidosis in the newborn to chronic neurologic dysfunction with structural abnormalities in the central nervous system without systemic acidosis.
    Defects in PDHA1 are the cause of X-linked Leigh syndrome (X-LS) [MIM:308930]. X-LS is an early-onset progressive neurodegenerative disorder with a characteristic neuropathology consisting of focal, bilateral lesions in one or more areas of the central nervous system, including the brainstem, thalamus, basal ganglia, cerebellum, and spinal cord. The lesions are areas of demyelination, gliosis, necrosis, spongiosis, or capillary proliferation. Clinical symptoms depend on which areas of the central nervous system are involved. The most common underlying cause is a defect in oxidative phosphorylation. LS may be a feature of a deficiency of any of the mitochondrial respiratory chain complexes.
  • Post-translational
    Phosphorylation at Ser-293 by PDK family kinases blocks the access to active site, and inactivates the enzyme.
  • Cellular localizationMitochondrion matrix.
  • Information by UniProt
  • Alternative names
    • mitochondrial
    • PDHA1
    • PDHCE1A
    • PDHE1-A type I
    • PHE1A
    • Pyruvate dehydrogenase (lipoamide) alpha 1
    • Pyruvate dehydrogenase complex E1 alpha polypeptide 1
    • Pyruvate dehydrogenase E1 component subunit alpha
    • Pyruvate dehydrogenase E1 component subunit alpha somatic form mitochondrial
    • Pyruvate dehydrogenase, alpha-1
    • somatic form
    see all
  • Database links


Our Abpromise guarantee covers the use of ab115345 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
ELISA Use at an assay dependent concentration.

Phospho S300 PDH E1 alpha protein (PDHA1) Profiling ELISA Kit images

  • The phosphorylation state of PDHA1 can vary by treatment but also by cell culture conditions such as media supplements, nutrients and also cell density.
  • HeLa cells were cultured for 4 hours in media supplemented with DCA (20mM) to specifically inhibit mitochondrial PDH kinases, or NaF (20mM), a general inhibitor of serine/threonine protein phosphatases. The DCA treatment did not reduce the level of phospho S300 confirming that there is little endogenous phospho S300. Conversely NaF treatment, to inhibit cellular serine phosphatases, did increase the phosphorylation level of S300.
  • The PDHA1 bound from undosed HeLa cells was subject to in-well kinase treatment (PDK1&3) or in-well phosphatase treatment(PDP1) according to the supplementary protocol shown below. Untreated cells did not show a significant endogenous phosphorylation signal at S300 this could be increased by kinase treatment. Phosphatase treatement had no effect on the endogenous (low) level of phospho S300 signal.


References for Phospho S300 PDH E1 alpha protein (PDHA1) Profiling ELISA Kit (ab115345)

ab115345 has not yet been referenced specifically in any publications.

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Unfortunately we are not able to sell the detection antibodies from this kit individually.